20521278

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{337}}^1$

素因数の和:561

約数の個数: 48

約数和(自身を含む): 47455200

約数和(自身を除く): 26933922

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 199, 306, 337, 398, 597, 674, 1011, 1194, 1791, 2022, 3033, 3383, 3582, 5729, 6066, 6766, 10149, 11458, 17187, 20298, 30447, 34374, 51561, 60894, 67063, 103122, 134126, 201189, 402378, 603567, 1140071, 1207134, 2280142, 3420213, 6840426, 10260639, 20521278]

約数ペア:

[(1, 20521278), (2, 10260639), (3, 6840426), (6, 3420213), (9, 2280142), (17, 1207134), (18, 1140071), (34, 603567), (51, 402378), (102, 201189), (153, 134126), (199, 103122), (306, 67063), (337, 60894), (398, 51561), (597, 34374), (674, 30447), (1011, 20298), (1194, 17187), (1791, 11458), (2022, 10149), (3033, 6766), (3383, 6066), (3582, 5729)]